Charles LeClaire/US PresswireLandry Jones is training for the NFL combine in California.

"You see some of his decision-making, some of his inconsistency in terms of accuracy throwing the football,” Kiper said. “He's just kind of leveled off. He maybe played some better football earlier in his career than he did late at times.

“I'd say right now third to fifth round area, third or fourth round area."

Jones came back to school for his senior season in large part to bolster his draft stock. But if NFL teams view Jones the way Kiper does, that obviously won’t be the case.

Kiper, however, is high on other OU draft hopefuls. He sees offensive tackle Lane Johnson and safety Tony Jefferson going somewhere in the second round.

“He's gained a lot of momentum and will continue to gain a lot of momentum as he moves through the process,” Kiper said of Johnson, who was recruited to Norman originally as a tight end. Johnson actually played quarterback in junior college. “There's not a lot of guys that can be hole-fillers at that position after the top group."

Kenny Stills and Tony Jefferson have elected to enter the 2013 NFL draft, a source told ESPN's Joe Schad. Stills, a junior receiver, led the Sooners with 82 receptions for 959 yards and 11 touchdowns this season. Jefferson, a junior safety, led OU with 119 tackles.

Matt Ryerson/US PresswireOU receiver Kenny Stills started every game in his Sooners career.

The loss of Jefferson could be the biggest blow to the Sooners, who made him a major part of their defensive system in 2012. He was the quarterback of the defense, the most productive player and a leader in the secondary. With his decision to leave, OU is faced with the prospect of replacing three of five starters in the secondary in 2013. And All-Big 12 cornerback Aaron Colvin, a junior, might still elect to join Stills and Jefferson in entering the 2013 draft.

Stills was the most explosive downfield threat on OU’s offense with his combination of speed and size. He started all 38 games of his Sooners career and finished with 204 receptions for 2,594 yards and 25 touchdowns. His decision to leave means OU will have to replace both of its outside receivers with Penn State transfer Justin Brown also ending his collegiate career in the Cotton Bowl.

The Sooners have very few options on campus to replace Jefferson, which means several newcomers could be asked to play immediately, including current 2013 defensive back commitments Hatari Byrd (Fresno, Calif./Central East) and Ahmad Thomas (Miami/Central).

The prospect of replacing Stills at receiver is much more promising for the Sooners. True freshman Trey Metoyer, who started the first four games of the 2012 season, is the likely favorite to step in at Stills' receiver spot. Fellow freshman Durron Neal and junior Lacoltan Bester should join Metoyer in the competition to replace Stills in 2013.

Brett Deering/Getty ImagesTrey Millard had 33 rushes and caught 30 passes for the Sooners in his junior season.

Fullback Trey Millard announced he would be returning to OU for his senior season after flirting with the idea of declaring for the 2013 NFL draft. The junior’s decision is great news for the Sooners as Millard should be one of the core members of the squad in 2013.

Since he stepped on campus as a freshman, Millard has been one of the most productive players on the team. He’s arguably the Sooners best special teams player and one of the best playmakers on offense although tends to be under utilized in the Sooners system.